But the youngster struggled in subsequent seasons under Louis van Gaal, and ended up on loan at Borussia Dortmund.

He was not in Jose Mourinho’s plans last season and spent the year on loan at Sunderland where, reunited with Moyes, he made 25 appearances and 18 starts for the now-relegated Black Cats. He did not score a goal.

The result was Januzaj’s sale to Sociedad on Wednesday for a reported fee of €11 million.

With his time at United now done, the now-22-year-old midfielder took to Twitter to say goodbye.

I will always have love for @ManUtd pic.twitter.com/mCdC2giPsF

— Adnan Januzaj (@adnanjanuzaj) July 12, 2017

"Where to start… I've had some incredible moments with Manchester United since I joined," he said

"I want to say a massive thank you to all my team-mates that have come and gone from the club. It's been a pleasure to play with you all.

"Thank you to some of the coaches and staff that work at Manchester United to make it such a great club!

"Unfortunately, my time at the club has come to an end and it didn't go the way I wanted it to go but I will always have love for Manchester United.

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"And finally, a huge thank you to the fans that have stuck by me through the good and bad times! I will never forget that positive support. Thank you #GGMU".

Januzaj will now see if he can get his once-promising career back on track with Sociedad, who finished sixth and qualified for the Europa League for the 2017-18 season.